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MC33025

Features: • 50 ns Propagation Delay to Outputs• Dual High Current Totem Pole Outputs• Wide Bandwidth Error Amplifier• FullyLatched Logic with Double Pulse Suppression• Latching PWM for CycleByCycle Current Limiting• SoftStart Control with Latched Overcurrent Res...

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SeekIC No. : 004415615 Detail

MC33025: Features: • 50 ns Propagation Delay to Outputs• Dual High Current Totem Pole Outputs• Wide Bandwidth Error Amplifier• FullyLatched Logic with Double Pulse Suppression• ...

MC33025 Data Sheet

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Part Number:
MC33025
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• 50 ns Propagation Delay to Outputs
• Dual High Current Totem Pole Outputs
• Wide Bandwidth Error Amplifier
• FullyLatched Logic with Double Pulse Suppression
• Latching PWM for CycleByCycle Current Limiting
• SoftStart Control with Latched Overcurrent Reset
• Input Undervoltage Lockout with Hysteresis
• Low StartUp Current (500 A Typ)
• Internally Trimmed Reference with Undervoltage Lockout
• 90% Maximum Duty Cycle (Externally Adjustable)
• Precision Trimmed Oscillator
• Voltage or Current Mode Operation to 1.0 MHz
• Functionally Similar to the UC3825


Pinout

Connection Diagram


Specifications

Rating
Symbol
Value
Unit
Power Supply Voltage
VCC
30
V
Output Driver Supply Voltage
VC
20
V
Output Current, Source or Sink (Note 1)
DC
Pulsed (0.5 s)
IO
0.5
2.0
A
Current Sense, SoftStart, Ramp, and Error Amp Inputs
Vin
0.3 to +7.0
V
Error Amp Output and SoftStart Sink Current
IO
10
mA
Clock and RT Output Current
ICO
5.0
mA
Power Dissipation and Thermal Characteristics
SO16 Package (Case 751G)
Maximum Power Dissipation @ TA = +25°C
Thermal Resistance, JunctiontoAir DIP Package (Case 648)
Maximum Power Dissipation @ TA = +25°C
Thermal Resistance, JunctiontoAir
PD
RJA

PD
RJA
862
145

1.25
100
mW
/W

W
/W
Operating Junction Temperature
TJ
+150
Operating Ambient Temperature (Note 2)
MC34025
MC33025
TA
0 to +70
40 to +105
Storage Temperature Range
Tstg
55 to +150




Description

The MC34025 series are high speed, fixed frequency, doubleended pulse width modulator controllers optimized for high frequency operation. They are specifically designed for OffLine and DCtoDC converter applications offering the designer a cost effective solution with minimal external components. MC34025 series integrated circuits feature an oscillator, a temperature compensated reference, a wide bandwidth error amplifier, a high speed current sensing comparator, steering flipflop, and dual high current totem pole outputs ideally suited for driving power MOSFETs.

Also included are protective features of MC34025 series consisting of input and reference undervoltage lockouts each with hysteresis, cyclebycycle current limiting, and a latch for single pulse metering.

The flexibility of MC34025 series allows it to be easily configured for either current mode or voltage mode control.




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